Collapsible hub



Nov. 4, 1930.

A. G. WISE GOLLAPSIBLE HUB Filed Aug. 25, 1928 Patented Nov. 4, 1930 .AnrHoNYe; wisnvo'r' Los'jANeELns, cniirroitni'n, nssisnon' 'To-MErno-GoLnwYiN-j 1 iyiAYE c m m or CULVER oimY, onmronniagn oonronnrion or 'miwz WYORK v .7

:This invention relates broadly to col-f lapsible, hubs, hobs or pulleys for; use onmotion picture film equipment such'as winders, rewinde'r's, film magazines and the like, and

ffo'r'other purposes where a device ofthis na-- turermayj be adapted." For, purpose of illus-l is woundi'iintoj rolls! of ,yarying 1engt11, say" I froma few'feeltto OO- or-moren Mechaniccal winding devices are {customarily used,

but 'someidifliculty has been experienced in devising means: for attaching the free, or

so astoenable therotation'of the hub-to wind zo the-strip ofxfilm into 'arol-l; Furthermore,after a strip of film is wound into alroll; for example, upon a: common form ofirewinder' (which resembles a spool with v onei'edge removed) the'roll orspoolof'strip filmcan: be pulledoif the hub only afterjcausingfconsiderableslippage to occur between V- adjoining or contacting layersof film, parothersuitableshaft and to be keyed; to, said a ticularly centrally of the r'oll and near, the hub." ,--This slippage or movement ofcontac't:

3o; ingifilm surfaces upon each other ,andinclose' contacttherew1th, causes scratches and abra- Y Q sions to form on the delicate surfaces of the film', .thereby often completely ruiniiigapor- ,tionjofthe'film.

Another; object of this invention t -p1:

vide a" hub or spool to'be'used in handling continuous 'filni such as 'glnOtlOIl picture or sound film, thehub-being provided; with means for engaging the free or leader end of afilm strip and with means adapted-to assist in'the removal'of film wound upon said hub.-

I Other objects and uses of my invention will become apparent to those skilled inthe-art', from the following ,detaileddescription of one preferred formjof myinvention, it'being understood that numerous changes and modi ficatio-ns. may be made therein'and adaptations made thereof Without departing from the spirit of this invention; 1 i i In describing my invention reference shall keyed upon, the shaft The detailsv offthe hub: and rewinder disc are: shown in Figures;

I may "comprise they following, elements a spindle or, shaft'by 'meansofa key carried by;

'cumferential flanges or'e'dges ,10 maybe H pco'ntnrsiiznn iugef 1 i Applicat ionfiled August 25, ieasiasfiai Nap-moss. l V

a we the a pended. arisin -S, an;

- Figure lis'a'rear elevation, partly brokenaf I away,;of ajrewinderjspool equipped with a 5 collapsible hub.

Figure 2; is" a lvertica l, axial section taken alonjgline:22, Figure 1."

Figure .3 isa vertical section taken through 3T3 ofFigureQ." i y Figure-4 is a side elevation ofv-afrewinder;

the hub (in expandedposition) alongjline hubinposition and readyfor use; '1 I In FigureA there is shown a commontype'i shaftbeingiirot'ated bymeans of ahandle I iThelargegear mounted on-shaft 2 engages'ii, leader end of a strip upon awindinghubf with a smallemgear mounted upon ;a spindle; Q i 4. i The jrewind'er hubTI-and guidedisc rd-(are! 1,32 music a iReferringito these figures, the guide isc; i; 5 has attachedthereto a collapsible hub-1 which centrallyfdisposed sleeve f6 provided with a" 5 1 keyway 7 adapted to receive-the spindle 4501" said spindle or shaft. The? sleeve .6 may bear a butting-roller, 8 1

which may form an integral part of the sleeve orbushingfi. "Acspool 9I-pro'vided with cirr.

mountedl upon the sleeve 6 and L positioned thereon by means of a locking pin 11 mounted; in the spool '9 and extending interiorly' into an arcuate or segmental aperture 12'formed, i

in thezsleevie 6: By means of this construetion thefspool9, may belrotated; through a small angle, say 45, upon-the sleeve ml The hub proper may consist. of asplitor dividedrimonhub, for example, it may com-z; prise the two rim or hulo sectionsv 13 and 14 which-are preferablyhingedly connected to 95 the flanges 10 of the spool, 9 by means of pins l5 and 16. It is to be understood that ad -2' joining ends of the-rim or hub' sections 13 and 14 are preferably hingedly connected to' the spool 9 and means are provided for y'ield 0 echanism equipped with a rewinde de'f f ingly connecting andmaintaining the free V of releasing pins 22 and 23 freely or slidably ends of such hingedly connected rim portions in substantial contact. As shown in the drawing the rim portions 13 and 14 may be yieldingly connected together at the free ends by means of a spring 17 extending from a cavity 18 formed in rim portion 13 into a cavity 19 formed in the rim portion 14. The springl? is connectedto the freeen ds of rim portions 13 14 by means of pins 20 and 21 mounted in the cavities 18 and 19, respectively;

The free ends of rim portions 13 and14- are maintained in spaced relation by means mounted in suitable apertures in thespool 9. The pins 22 and 23 are of such length that by resting against the sleeve 6 they come in contact with the inner surfaces of pivoted" rim portions 13 and 14, forcing said rim porxtions outwardly so that the-free ends of; said rim portions are maintainedin spaced relat1on,'thereby forming the space or aperture 24.

The sleeve 6 is formed with milled or flattened surfaces in its outer surface and at such circumferential points in the-sleeve 6 as will correspond'with the circumferential distributionor position of the releasingpins 22 and 23 a-re'dia'metrically positioned inthe zdirection through an arc of about'459 permittedby the movement of the pin llin' the arcuate aperture 12 formed in the sleeve 6,-

the release pins 22and2'3 will come-in contact withithefiats 25 and=26"resp ectively, thereby allowing spring 17 tobring the free'ends of .thepi'voted rim or-hub sections 13 and 14 in contact or insubstantial contact, thereby causing the entire hub to collapse or the periphery of the hub or combinedlrim-sections to be decreased.

lap sib'le hub on'- a--rewinder forcontinuous films the hub maybe mounted centrallyiof a disc 5 by suitable means such as, for exthe spool 9 The disc 5 togetherwi'th its connected' hub may then'be' mounted on a suite able spindle such as the'spindle 4 of the device shown in Fi gure4. A; counter-clockwise rotation of the handle 3 of the device 4 will cause a. clockwiserotation of thespindle 4, disc 5', and-the collapsible hub. Rotation of a spindlekeyed into the sleeve '6' in such counter-v clockwise direction as; indicated in. Figure 1 willlcause the collapsible hub to assume the position shown in such figure. Clockwise and counterclockwise direction ofrotation of spindle 4'i'n Figure 4 andsleeve 6 and hub in Figure 1 are reversed with relation to Figure land Figure 4'inasmuch as'Figure 1 In" using the hereina bove described colample; screws 27 connecting the disc- 5 with is a view looking toward the operator, While Figure 4 shows a right hand view of the rewinder.

In order to cause collapse of the hub the spindle need only be turned slightly in a clockwise direction (Figure 1) whereupon the free ends of the pivoted rim sections'will be brought into substantial contact, while the opening. 28 between thepivoted endsof the rim sections vwill be slightly enlarged."- i The free or leader end of "a strip of continuous film maythen be insertedinto the opening 28 andbyagain turning the spindle in a counter-clockwise; direction as shown in Figure 1, the'hub will expand, thereby locking or clamping the pivoted ends of the rim or hub sections 13 and 14 upon the stripof film inserted into opening 28. I

Continued rotation of the spindle and sleeve 6 in a counter-clockwise direction will enable all ofthe film to be wound :into a roll upon the hub. After the-filmi'has thusbeen wound a slight or partial rotation of the spindlesleevein' a clockwise direction or; di

rection counter to that'used during winding wvil-l cause the hub tocollapseashereinabove described, thereby liberating the leaderend j of the strip: of film from opening 28 and allowing the completed roll of fil'n'rfto be easily removed from the hub. a

In order to facilitate a the introduction of a 1, leader offilm and attaching said leader tothe';

hub 55 an axial slot 29-1naybe made in the edge be used independently of flange 5 -when' 'other means such as a weighted guide roller'are provided-to guide the film: ontothehub;

It will be understood: that this invention is not 2 limited to a collapsible hub in which':'thedirection of rotation: V is counterclockwise: when in expanded position or clockwise when in collapsed position. Furthermore, the-invention'is not limited to a hubwhich is only to be used in connection with a rewinder, but embraces broadly ahub or winder pulley 1 10'of the-spool 9. The collapsible h'ub 'may which may be adapted for various other '-pur--- poses, for example, it may be used' in continuous film cameras, magazines, polishing.

machines, film waxing machines "and the like, or it may even be used in other industries-besides the motion picture industry.

Those skilled in the art will undoubtedly be able to make minor modifications and adaptations of this device, but all such modifications as come within the skill of the art are embraced as within 'the scope of the. following claims.v r

I claim:

1. A collapsible hub comprising a central: sleeve provided with flats in its outer surface;

a spool on said sleeve, means forl.imitingthe rotation of said spool on said-sleeve, hub sections pivotally connected to said spool, spring means yieldingly connecting the free ends of said hub sections, and means earned by said able pins carriedbvsaid1spool and adapted a a a to cooperate with said sleeve andl flats thereof I a "for moving said hub sections into'exp'anded v 7 position when said jslee've'is partially rotated i 1 tation of said'spool on said sleeve'carried by f aid spool, hub sections pivotally connectedi tosaid spool, spring means yieldingly cong I neoting the free endsofsaid hub sections, 3 v

Pand radially movable pins v carried by said i fl'li spool and adaptedto cooperate ,vvithjsaid I j sleeve and flatsthereoffor moving-saidlhub I a.

sections into expanded position.

. mam

spool and adapted 'to oooperatewith said sleeve for pivotally moving saidhub ,sec-

tions'intoexpan'ded position-When said sleeve a is partially rotated with respect to said'spooll v 2. A, collapsible hub comprising a-central sleeve provided Withflatsin its outer surface 1 a spool on'said sleeve, means for limiting r0- 7 :3. A collapsiblehub comprising a central f sleeve'provided With flats inits outer'surfaca'; a spool provided With flanged ends carried on said sleeve, means for limiting the rotationflof p said spool or said sleeve, hubsectionspivotals lyconnected to saidf spool flanges, a radial on said sleeve, means carriedby-saidspool for limiting rotation-1' ofsaid spool onsaid sleeve, hub sections pivotally connected to said spool flanges, aradiali opening' in said I spool flangein alignment 'with 'the'space adi joining pivoted endsof said hub lsections,

spring means yieldingly connecting the free ends of said,hubjsections,-and radially mov- With respect to said spool. I

j ,v 5 A collapsible hub compjri'singa central f sleeve provided with flats inits outer surface, 1 *arspool providedvwith fian'ged ends mount I ed on said sleeve, means for limiting rotation:

50 1 .1 ried bysaid spool and having adjoining ends :7

of said: spool ,on-sai d' sleeve, a split hub carthereof connected to'said spoolfla'nges, radial opening in said spool flange inalignment with the spacebetween adjoining pivoted ends of said hub-sections,*spring' means yieldingly connectingithe free ends off-said;v

' hub sections, and meanscarried by saidspoolandadapted to cooperate vvith saidsleeves p v "for pivotally inoving' saidhubsections into e expanded. position When-said sleevejis par tially rotated'vvith respect to'said spool.

Signed at Los Angeles, California, this- 16 day of August,

I ANTHONY G. WISE, 

